Chair backrest

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Description

FIG. 1 is a perspective view of the chair backrest showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Claims

The ornamental design for a chair backrest, as shown and described.

Referenced Cited
U.S. Patent Documents
D493627 August 3, 2004 Ma
D534384 January 2, 2007 Su
D540080 April 10, 2007 Su
D540081 April 10, 2007 Su
D540579 April 17, 2007 Su
D540580 April 17, 2007 Su
D543398 May 29, 2007 Su
D559571 January 15, 2008 Meda
D579223 October 28, 2008 Greutmann
D579695 November 4, 2008 Wu
D580198 November 11, 2008 Wu
D580199 November 11, 2008 Su
D582170 December 9, 2008 Chi
D650617 December 20, 2011 Chen
Patent History
Patent number: D661137
Type: Grant
Filed: Nov 16, 2011
Date of Patent: Jun 5, 2012
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/406,633
Classifications
Current U.S. Class: D6/502; D6/366